/* compare-scores.c */
int compare_scores(const void* score_a, const void* score_b);
int compare_scores_desc(const void* score_a, const void* score_b);

/* compare_rectangle.c */
typedef struct {
	int width;
	int height;
} rectangle;
int compare_areas(const void* a, const void* b);
int compare_areas_desc(const void* a, const void* b);

/* compare_names.c */
int compare_names(const void* a, const void* b);
int compare_names_desc(const void* a, const void* b);

